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Aerobic and low-nitrogen composting method based on oxygen enrichment and free radical reinforcement and device

A free radical and oxygen-enriched technology, applied in fertilization devices, organic fertilizers, preparation of organic fertilizers, etc., can solve the problems of uneven oxygen content, low treatment efficiency, uncontrollable oxygen content, etc., and achieve control of nitrification and denitrification. , easy to operate and flexible, improve the effect of microbial activity

Pending Publication Date: 2017-12-22
KUNMING UNIV OF SCI & TECH
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the limitations of the above-mentioned existing aerobic composting treatment technology, that is, the treatment efficiency is not high due to the long duration of the natural composting process, and at the same time, the oxygen content caused by artificial turning is uneven and the oxygen content cannot be controlled. The present invention aims to Provide an aerobic and low-nitrogen composting method based on oxygen-enrichment and free radical enhancement, that is, a method for treating organic waste under oxygen-enriched conditions, and at the same time use electrochemical action to generate trace free radicals to strengthen the composting effect. Reduce the toxicity of heavy metals, realize the resource utilization of organic matter, and optimize the composting treatment conditions

Method used

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  • Aerobic and low-nitrogen composting method based on oxygen enrichment and free radical reinforcement and device
  • Aerobic and low-nitrogen composting method based on oxygen enrichment and free radical reinforcement and device
  • Aerobic and low-nitrogen composting method based on oxygen enrichment and free radical reinforcement and device

Examples

Experimental program
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Effect test

Embodiment 1

[0029]Embodiment 1: The aerobic and low-nitrogen composting method based on oxygen-enrichment and free radical strengthening is used to process animal manure, and the specific operations are as follows:

[0030] 1. Animal feces

[0031] Feces contain a large amount of organic matter, such as cellulose, starch, sugar and fat protein, as well as some microorganisms and inorganic salts; it is characterized by high content of N, P, and S elements, and is easy to produce in an anaerobic environment Smelly substance, but with high organic matter content and high economic interest.

[0032] 2. This method can process 900kg of animal manure

[0033] The method adopts a continuous composting method. After the composting material enters from the feed port of the fermentation device, it is continuously cut and passed through the fermenter equipped with a hollow perforated electrode rod array. The trace free radicals generated by the electrode rods accelerate the rate of composting, and ...

Embodiment 2

[0040] Embodiment 2: The aerobic and low-nitrogen composting method based on oxygen-enrichment and free radical strengthening is used to treat water plant sludge, and the specific operations are as follows:

[0041] 1. Waterworks sludge

[0042] With the unprecedented increase in the discharge of urban sewage, the amount of excess sludge produced by the sewage treatment process that needs to be discharged from the system is very large. The sludge has a high moisture content, is bulky, perishable, has a foul smell, and contains a large amount of toxic and harmful substances such as heavy metals and germs. Groundwater and air cause great pollution and have adverse effects on human health. Therefore, sludge must be treated in a harmless, reduced and stabilized manner, and disposed of properly to avoid secondary pollution to the environment.

[0043] In the process of sludge disposal, the principles of safe disposal, adaptation to local conditions, energy saving and consumption r...

Embodiment 3

[0051] Example 3: The aerobic and low-nitrogen composting method based on oxygen-enrichment and free radical enhancement is used to treat food waste. The specific operations are as follows:

[0052] 1. Food waste

[0053] Food waste mainly refers to the waste generated in the daily life of residents and other activities such as food processing, catering services, and unit meals. Food waste includes waste cooking oil and kitchen waste. Among them, waste edible oil refers to non-edible animal and vegetable oils and various oil-water mixtures, while kitchen waste refers to food residues and food processing waste, mainly solid residues in kitchen waste.

[0054] Since kitchen waste is easy to ferment, deteriorate, and rot, it not only produces a large amount of toxins, emits foul-smelling gases, but also pollutes water bodies and the atmosphere. Diseases endanger people's daily life and health.

[0055] 2. This method processes 500kg of kitchen waste

[0056] The method adopts...

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Abstract

The invention discloses an aerobic and low-nitrogen composting method based on oxygen enrichment and free radical reinforcement and a device. In a composting process, fermentation raw materials are arranged between hollow perforated electrodes, and trace free radicals are produced under the actions of the hollow perforated electrodes and external pressure to promote the composting effect; meanwhile, air is blown into compost through the hollow perforated electrodes, the compost is in a sufficient aerobic fermentation state, and composting is finished. With adoption of the method and the device, the composting efficiency can be increased, the composting effect can be enhanced, meanwhile, toxicity of heavy metals can be reduced, and recycling of organic matter can be realized.

Description

technical field [0001] The invention relates to a method and device for aerobic composting of organic waste, that is, aerobic and low-nitrogen composting treatment is performed under oxygen-enriched and strong free radical conditions to realize the composting process of organic matter, and belongs to the field of resource utilization of organic waste. Background technique [0002] With the development of industry and agriculture and the improvement of human living standards, more and more pollutants are produced, of which organic waste pollution accounts for a large proportion. These organic wastes contain a large number of pathogenic bacteria, parasite eggs, etc., and random discharge will cause harm to human health; Recycling. Ordinary composting technology uses the degradation of natural microorganisms to transform unstable organic matter into more stable organic matter under aerobic conditions, but it takes a long time and low efficiency to degrade organic waste by natu...

Claims

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Application Information

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IPC IPC(8): C05F17/00C05F17/02
CPCC05F17/30C05F17/979C05F17/964C05F17/80C05F17/20Y02W30/40
Inventor 李军燕马曦瞿广飞蔡营营吕培张航
Owner KUNMING UNIV OF SCI & TECH
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